Half-sole for boots and shoes.



J. Mel. OGILVIE.

HALF soLE Foa oos AND sHoEs.

APPLICATION FILED FEB. 27. l9l8.

' Patented Sept. 10, 1918 NVE/V TUA JOHN MOI. PGILVIE, OF TORONT,ONTARIO, CANADA.

HALF-SOLE FOR BOOTS AND SHOES.

To all 'whom it may concer/n.'

Be it known that I, JOHN MOI. OGILVIE, of the city of Toronto, in thecounty of York, Province of Ontario, Canada, have invented certain newand useful Improvements in Half-Soles for Boots and Shoes, of which thefollowing is a speciication.

Half soles for boots and shoes are now commonly made of rubber andrubber containing compositions. To prevent cracking occurring consequenton the constant flexing of the sole in use, the filling materialsemployed in the composition must be of such a nature and be employed insuch proportions that the flexibility of the sole remains fairly high.Such soles cannot be satisfactorily nailed to the upper, but must besewn as the nail heads tend to pull through the composition. The sewingmaybe easily effected around the sides and toe of a half sole, but notunder the shank of the shoe, and it has been customary to strengthen theshank portion of the half sole with fabric applied t'o or embeddedtherein.

This solution of the diiiculty has not been entirely satisfactory, as intrimming the half soles the fabric becomes exposed at the edges, givinthe soles an objectionable appearance an affording an opportunity forthe fabric to absorb moisture, which ultimately rots the fabric.Further, if. such fabric be applied to the under surface of the shank ofthe half sole, it is exposed to the attacks of moisture and also givesthe sole a patchy appearance, and if it be embedded in the shank theheads of the nails must be punched down and sunk in the soft undersurface of the shank, which also gives a bad appearance and tears andcrushes the composition around the nail holes.

The ordinary leather half sole possesses none of the above objectionablefeatures and my object is to devise a rubber composition half sole whichwill possess all-the desirable a strip are formed is easily regulated sothatA characteristics of -the leather sole together with the specialadvantages of the composition sole.

I attain my objects by forming integral with the shank portion ofthehalf sole a nailing strip of special composition substantially ashereinafter described and illustrated in the accompanying drawings inwhich- Figure 1 is a plan View of a sole constructed in accordance-withmy invention; Fig. 2 is a side elevation of the same;

SpecificationI of Letters Patent.

Patented Sept. 10, '1918.

Application le'd February 27, 1918. Serial N6. 21.*93937.

Fig. 3 a longitudinal section on an enlarged scale of the nailing stripand shank of the half sole;

Fig. 4 a similar view showing a slightl 'position containing aconsiderable proportion of vegetable fiber will be employed, and thisfiber will be preferably incorporated in the composition so that thefibers mainly run transversely of the sole. Such a composition, whileypossessing great durability, is comparatively flexible and elastic,bending readily, particularly on transverse lines. The shank portion 1of the half sole has applied thereto a nailing strip 2 formed of acomposition which, when cured, possesses less flexibility and elasticitythan the main portion of the sole, so that it will resist penetration bya nail head much more effectively than the composition of which the mainpart of the sole is formed.

These differences in the physical characvportion of the sole may be ofteristics of the nailingl strip can vbe most readily attainedbyincorporating in the composition a considerably greater proportion ofliber or other equivalent material than inthe main portion of the sole.This nailing strip is molded on the shank portion of the half sole andthe complete sole thus formed is suitably vulcanized. The result is thatthere is formed integral with the shank portion of the half sole anailing4 strip of homogeneous composition possessing the characteristicsabove set forth.

' The coloring of the respective compositions of which. the half soleand the nailing there is no diiference in color, so that despite thedifferent physical properties of the two parts of the sole to the eyethe appearance may be the same if so desired. Such a half sole may thusbe easily trimmed on its edges without spoiling its appearance.

In unitin the nailing stri and the shank of the hal sole, it is preerable to skive t the end of the shank portion of the sole to a featheredge either as shown in Fig. 3 or Flg. 4and to mold the compositionforming the nailin rear edge of t e nailing strip comes very nearly to afeatherl edge and its upper and lower surfaces merge into the similarsurfaces of the shank portion of the half sole without abrupt'changes ofdirection.

From the above description it will be seen that 1 have devised a halfsole which Will satisfactorily attain the objects of my invention as setout in the preamble of this specification. t

What claim as my invention is 1. A half sole of a berizedrubber-composition having an integral nailing strip formed in its shankportion by use therein of a larger proportion of ber than in theremainder of the sole.

2. A half sole of rubber-composition having vulcanized to its shankportion a nailstrip thereto so that theing the end of its shank portionformed of a nailing strip of berized rubber oomposi! tion vulcanizedthereto and containing a large proportion of ber disseminated throughoutits mass.

4. A'half sole ofberized rubber-composition, in which the bers mainlyrun transversely of the sole, having a nailing strip of berizedrubber-composition vulcanized to its shank containing a largerproportion of ber than thevsole.

'Signed at Toronto this 19th dayfof Febgs JOHN Mci. oeiLviE.'

